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d855b261d1
We currently rely on .align directives to ensure that each exception vector entry is the appropriate offset from the vector base address. This is slightly fragile, as were an entry to become too large (greater than 32 A64 instructions), all following entries would be silently shifted until they meet the next alignment boundary. Thus we might execute the wrong code in response to an exception. To prevent this, introduce a new macro, VECTOR_ENTRY, that uses .org directives to position each entry at the precise required offset from the base of a vector. A vector entry which is too large will trigger a build failure rather than a runtime failure which is difficult to debug. For consistency, the base and end of each vector is similarly annotated, with VECTOR_BASE and VECTOR_END, which provide the necessary alignment and symbol exports. The now redundant directives and labels are removed. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18904 6f19259b-4bc3-4df7-8a09-765794883524
219 lines
5.0 KiB
C
219 lines
5.0 KiB
C
/** @file
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Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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Copyright (c) 2011 - 2015, ARM Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __AARCH64_H__
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#define __AARCH64_H__
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#include <Chipset/AArch64Mmu.h>
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#include <Chipset/ArmArchTimer.h>
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// ARM Interrupt ID in Exception Table
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#define ARM_ARCH_EXCEPTION_IRQ EXCEPT_AARCH64_IRQ
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// CPACR - Coprocessor Access Control Register definitions
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#define CPACR_TTA_EN (1UL << 28)
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#define CPACR_FPEN_EL1 (1UL << 20)
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#define CPACR_FPEN_FULL (3UL << 20)
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#define CPACR_CP_FULL_ACCESS 0x300000
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// Coprocessor Trap Register (CPTR)
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#define AARCH64_CPTR_TFP (1 << 10)
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// ID_AA64PFR0 - AArch64 Processor Feature Register 0 definitions
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#define AARCH64_PFR0_FP (0xF << 16)
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#define AARCH64_PFR0_GIC (0xF << 24)
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// SCR - Secure Configuration Register definitions
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#define SCR_NS (1 << 0)
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#define SCR_IRQ (1 << 1)
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#define SCR_FIQ (1 << 2)
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#define SCR_EA (1 << 3)
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#define SCR_FW (1 << 4)
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#define SCR_AW (1 << 5)
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// MIDR - Main ID Register definitions
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#define ARM_CPU_TYPE_SHIFT 4
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#define ARM_CPU_TYPE_MASK 0xFFF
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#define ARM_CPU_TYPE_AEMv8 0xD0F
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#define ARM_CPU_TYPE_A53 0xD03
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#define ARM_CPU_TYPE_A57 0xD07
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#define ARM_CPU_TYPE_A15 0xC0F
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#define ARM_CPU_TYPE_A9 0xC09
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#define ARM_CPU_TYPE_A7 0xC07
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#define ARM_CPU_TYPE_A5 0xC05
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#define ARM_CPU_REV_MASK ((0xF << 20) | (0xF) )
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#define ARM_CPU_REV(rn, pn) ((((rn) & 0xF) << 20) | ((pn) & 0xF))
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// Hypervisor Configuration Register
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#define ARM_HCR_FMO BIT3
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#define ARM_HCR_IMO BIT4
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#define ARM_HCR_AMO BIT5
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#define ARM_HCR_TSC BIT19
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#define ARM_HCR_TGE BIT27
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// Exception Syndrome Register
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#define AARCH64_ESR_EC(Ecr) ((0x3F << 26) & (Ecr))
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#define AARCH64_ESR_ISS(Ecr) ((0x1FFFFFF) & (Ecr))
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#define AARCH64_ESR_EC_SMC32 (0x13 << 26)
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#define AARCH64_ESR_EC_SMC64 (0x17 << 26)
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// AArch64 Exception Level
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#define AARCH64_EL3 0xC
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#define AARCH64_EL2 0x8
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#define AARCH64_EL1 0x4
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// Saved Program Status Register definitions
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#define SPSR_A BIT8
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#define SPSR_I BIT7
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#define SPSR_F BIT6
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#define SPSR_AARCH32 BIT4
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#define SPSR_AARCH32_MODE_USER 0x0
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#define SPSR_AARCH32_MODE_FIQ 0x1
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#define SPSR_AARCH32_MODE_IRQ 0x2
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#define SPSR_AARCH32_MODE_SVC 0x3
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#define SPSR_AARCH32_MODE_ABORT 0x7
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#define SPSR_AARCH32_MODE_UNDEF 0xB
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#define SPSR_AARCH32_MODE_SYS 0xF
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// Counter-timer Hypervisor Control register definitions
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#define CNTHCTL_EL2_EL1PCTEN BIT0
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#define CNTHCTL_EL2_EL1PCEN BIT1
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#define ARM_VECTOR_TABLE_ALIGNMENT ((1 << 11)-1)
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// Vector table offset definitions
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#define ARM_VECTOR_CUR_SP0_SYNC 0x000
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#define ARM_VECTOR_CUR_SP0_IRQ 0x080
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#define ARM_VECTOR_CUR_SP0_FIQ 0x100
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#define ARM_VECTOR_CUR_SP0_SERR 0x180
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#define ARM_VECTOR_CUR_SPx_SYNC 0x200
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#define ARM_VECTOR_CUR_SPx_IRQ 0x280
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#define ARM_VECTOR_CUR_SPx_FIQ 0x300
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#define ARM_VECTOR_CUR_SPx_SERR 0x380
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#define ARM_VECTOR_LOW_A64_SYNC 0x400
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#define ARM_VECTOR_LOW_A64_IRQ 0x480
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#define ARM_VECTOR_LOW_A64_FIQ 0x500
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#define ARM_VECTOR_LOW_A64_SERR 0x580
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#define ARM_VECTOR_LOW_A32_SYNC 0x600
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#define ARM_VECTOR_LOW_A32_IRQ 0x680
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#define ARM_VECTOR_LOW_A32_FIQ 0x700
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#define ARM_VECTOR_LOW_A32_SERR 0x780
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#define VECTOR_BASE(tbl) \
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.align 11; \
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GCC_ASM_EXPORT(tbl); \
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ASM_PFX(tbl): \
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#define VECTOR_ENTRY(tbl, off) \
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.org ASM_PFX(tbl) + off
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#define VECTOR_END(tbl) \
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.org ASM_PFX(tbl) + 0x800
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VOID
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EFIAPI
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ArmEnableSWPInstruction (
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VOID
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);
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UINTN
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EFIAPI
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ArmReadCbar (
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VOID
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);
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UINTN
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EFIAPI
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ArmReadTpidrurw (
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VOID
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);
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VOID
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EFIAPI
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ArmWriteTpidrurw (
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UINTN Value
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);
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UINTN
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EFIAPI
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ArmGetTCR (
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VOID
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);
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VOID
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EFIAPI
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ArmSetTCR (
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UINTN Value
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);
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UINTN
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EFIAPI
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ArmGetMAIR (
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VOID
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);
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VOID
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EFIAPI
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ArmSetMAIR (
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UINTN Value
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);
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VOID
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EFIAPI
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ArmDisableAlignmentCheck (
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VOID
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);
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VOID
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EFIAPI
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ArmEnableAlignmentCheck (
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VOID
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);
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VOID
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EFIAPI
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ArmDisableAllExceptions (
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VOID
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);
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VOID
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ArmWriteHcr (
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IN UINTN Hcr
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);
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UINTN
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ArmReadCurrentEL (
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VOID
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);
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UINT64
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PageAttributeToGcdAttribute (
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IN UINT64 PageAttributes
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);
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UINTN
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ArmWriteCptr (
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IN UINT64 Cptr
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);
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#endif // __AARCH64_H__
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